<template> 
  <div id="app">
    <!-- router-view 写单双标签都可以 他是用来渲染路由组件的 -->
    <!-- <router-view class="content"></router-view>
    <nav-tab></nav-tab> -->
    <router-view></router-view>
  </div>
</template>

<style lang="scss">
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  height: 100%;
  .content{
    height: calc(100% - 60px);
  }
}
</style>
